<template>
	<div class="register">
		<el-form ref="registerRef" :model="registerForm" :rules="registerRules" class="register-form">
			<h3 class="title">后台管理系统</h3>
			<el-form-item prop="username">
				<el-input v-model="registerForm.username" type="text" size="large" auto-complete="off" placeholder="账号">
					<template #prefix><svg-icon icon-class="login-user" class="el-input__icon input-icon" /></template>
				</el-input>
			</el-form-item>
			<el-form-item prop="dwp">
				<el-input
					v-model="registerForm.dwp"
					type="password"
					size="large"
					auto-complete="off"
					placeholder="密码"
					@keyup.enter="handleRegister"
				>
					<template #prefix><svg-icon icon-class="password" class="el-input__icon input-icon" /></template>
				</el-input>
			</el-form-item>
			<el-form-item prop="confirmDwp">
				<el-input
					v-model="registerForm.confirmDwp"
					type="password"
					size="large"
					auto-complete="off"
					placeholder="确认密码"
					@keyup.enter="handleRegister"
				>
					<template #prefix><svg-icon icon-class="password" class="el-input__icon input-icon" /></template>
				</el-input>
			</el-form-item>
			<el-form-item prop="code" v-if="captchaEnabled">
				<el-input
					size="large"
					v-model="registerForm.code"
					auto-complete="off"
					placeholder="验证码"
					style="width: 63%"
					@keyup.enter="handleRegister"
				>
					<template #prefix><svg-icon icon-class="validCode" class="el-input__icon input-icon" /></template>
				</el-input>
				<div class="register-code">
					<img :src="codeUrl" @click="getCode" class="register-code-img" />
				</div>
			</el-form-item>
			<el-form-item style="width: 100%">
				<el-button :loading="loading" size="large" type="primary" style="width: 100%" @click.prevent="handleRegister">
					<span v-if="!loading">注 册</span>
					<span v-else>注 册 中...</span>
				</el-button>
				<div style="float: right">
					<router-link class="link-type" :to="'/login'">使用已有账户登录</router-link>
				</div>
			</el-form-item>
		</el-form>
	</div>
</template>

<script setup>
import { ElMessageBox } from "element-plus";
import { getCodeImg, register } from "@/api/login";

const router = useRouter();
const { proxy } = getCurrentInstance();

const registerForm = ref({
	username: "",
	dwp: "",
	confirmDwp: "",
	code: "",
	uuid: ""
});

const equalToPassword = (rule, value, callback) => {
	if (registerForm.value.dwp !== value) {
		callback(new Error("两次输入的密码不一致"));
	} else {
		callback();
	}
};

const registerRules = {
	username: [
		{ required: true, trigger: "blur", message: "请输入您的账号" },
		{
			min: 2,
			max: 20,
			message: "用户账号长度必须介于 2 和 20 之间",
			trigger: "blur"
		}
	],
	dwp: [
		{ required: true, trigger: "blur", message: "请输入您的密码" },
		{
			min: 5,
			max: 20,
			message: "用户密码长度必须介于 5 和 20 之间",
			trigger: "blur"
		}
	],
	confirmDwp: [
		{ required: true, trigger: "blur", message: "请再次输入您的密码" },
		{ required: true, validator: equalToPassword, trigger: "blur" }
	],
	code: [{ required: true, trigger: "change", message: "请输入验证码" }]
};

const codeUrl = ref("");
const loading = ref(false);
const captchaEnabled = ref(true);

function handleRegister() {
	proxy.$refs.registerRef.validate(valid => {
		if (valid) {
			loading.value = true;
			register(registerForm.value)
				.then(() => {
					const username = registerForm.value.username;
					ElMessageBox.alert("<font color='red'>恭喜你，您的账号 " + username + " 注册成功！</font>", "系统提示", {
						dangerouslyUseHTMLString: true,
						type: "success"
					})
						.then(() => {
							router.push("/login");
						})
						.catch(() => {});
				})
				.catch(() => {
					loading.value = false;
					if (captchaEnabled) {
						getCode();
					}
				});
		}
	});
}

function getCode() {
	getCodeImg().then(res => {
		captchaEnabled.value = res.captchaEnabled === undefined ? true : res.captchaEnabled;
		if (captchaEnabled.value) {
			codeUrl.value = "data:image/gif;base64," + res.img;
			registerForm.value.uuid = res.uuid;
		}
	});
}

getCode();
</script>

<style lang="scss" scoped>
.register {
	display: flex;
	justify-content: center;
	align-items: center;
	height: 100%;
	background-image: url("../assets/images/login-background.jpg");
	background-size: cover;
}
.title {
	margin: 0px auto 30px auto;
	text-align: center;
	color: #707070;
}

.register-form {
	border-radius: 6px;
	background: #ffffff;
	width: 400px;
	padding: 25px 25px 5px 25px;
	.el-input {
		height: 40px;
		::v-deep(.el-input__wrapper) {
			padding: 1px 0 1px 8px;
		}
		input {
			height: 40px;
		}
	}
	.input-icon {
		height: 39px;
		width: 24px;
		margin-left: 0px;
		margin-right: 4px;
	}
}
.register-tip {
	font-size: 13px;
	text-align: center;
	color: #bfbfbf;
}
.register-code {
	width: 33%;
	height: 40px;
	float: right;
	img {
		cursor: pointer;
		vertical-align: middle;
	}
}
.el-register-footer {
	height: 40px;
	line-height: 40px;
	position: fixed;
	bottom: 0;
	width: 100%;
	text-align: center;
	color: #fff;
	font-family: Arial;
	font-size: 12px;
	letter-spacing: 1px;
}
.register-code-img {
	height: 40px;
	padding-left: 12px;
}
</style>
